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Mateos-Maroto A, E F Rubio J, Prévost S, Maestro A, Rubio RG, Ortega F, Guzmán E. Probing the effect of the capping polyelectrolyte on the internal structure of Layer-by-Layer decorated nanoliposomes. J Colloid Interface Sci 2023; 640:220-229. [PMID: 36863179 DOI: 10.1016/j.jcis.2023.02.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 02/21/2023]
Abstract
HYPOTHESIS The internal organization of polyelectrolyte layers deposited on colloidal templates plays a very important role for the potential applications of these systems as capsules for drug delivery purposes. EXPERIMENTS The mutual arrangement of oppositely charged polyelectrolyte layers upon their deposition on positively charged liposomes has been studied by combining up three different scattering techniques and Electronic Spin Resonance, which has provided information about the inter-layer interactions and their effect on the final structure of the capsules. FINDINGS The sequential deposition of oppositely charged polyelectrolytes on the external leaflet of positively charged liposomes allows modulating the organization of the obtained supramolecular structures, impacting the packing and rigidity of the obtained capsules due to the change of the ionic cross-linking of the multi-layered film as a result of the specific charge of the last deposited layer. The possibility to modulate the properties of the LbL capsules by tuning the characteristics of the last deposited layers offers a very interesting route for the design of materials for encapsulation purposes with their properties controlled almost at will by changing the number of deposited layers and their chemistry.
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Affiliation(s)
- Ana Mateos-Maroto
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040-Madrid, Spain.
| | - José E F Rubio
- Centro de Espectroscopía y Correlación, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040-Madrid, Spain
| | - Sylvain Prévost
- Institut Laue-Langevin, 71 Avenue des Martyrs, CEDEX 9, 38042 Grenoble, France
| | - Armando Maestro
- Centro de Fı́sica de Materiales (CSIC, UPV/EHU)-Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, 20018-San, Sebastián, Spain; IKERBASQUE-Basque Foundation for Science, Plaza Euskadi 5, 48009-Bilbao, Spain
| | - Ramón G Rubio
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040-Madrid, Spain
| | - Francisco Ortega
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040-Madrid, Spain; Unidad de Materia Condensada. Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040 Madrid, Spain
| | - Eduardo Guzmán
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040-Madrid, Spain; Unidad de Materia Condensada. Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII 1, 28040 Madrid, Spain.
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Sounouvou HT, Lechanteur A, Piel G, Evrard B. Silicones in dermatological topical drug formulation: Overview and advances. Int J Pharm 2022; 625:122111. [PMID: 35973590 DOI: 10.1016/j.ijpharm.2022.122111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/23/2022] [Accepted: 08/10/2022] [Indexed: 10/15/2022]
Abstract
Silicones, more specifically those of the polydimethylsiloxane type, have been widely used in the pharmaceutical industry for decades, particularly in topical applications. In the dermatological field, in addition to provide undeniable textural and sensory benefits, they can play important functions in the physicochemical properties, stability and biopharmaceutical behavior of these formulations. However, despite the notable advances that can be attributed to the family of silicones, the reputation of these compounds is quite bad. Indeed, silicones, even if they derive from sand, are synthetic compounds. Moreover, they are not biodegradable. They flow into our wastewater and oceans, accumulating in the fauna and flora. This obviously raises many concerns in the common imagination. Do silicones represent a danger for our environment? Should the human species worry about long term toxic effects? Are the claimed benefits really that important? After exploring the various applications of silicone excipients in topical dermatological formulations with a special focus on recent advances which open breathtaking prospects for dermatological applications, this paper shed light on the specific challenges involved in preparation of silicone-based drug as well as, the in vivo behavior of these polymers, the toxicological and environmental risks associated with their application.
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Affiliation(s)
- Hope T Sounouvou
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, University of Liège, 4000 Liège, Belgium; Medicinal Organic Chemistry Laboratory (MOCL), School of Pharmacy, Faculté des Sciences de la Santé, Université d'Abomey-Calavi, Campus du Champ de Foire, Cotonou, Benin.
| | - Anna Lechanteur
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, University of Liège, 4000 Liège, Belgium
| | - Géraldine Piel
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, University of Liège, 4000 Liège, Belgium
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, University of Liège, 4000 Liège, Belgium
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3
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Cheng Y, Zhang S, Wang J, Zhao Y, Zhang Z. Research progress in the synthesis and application of surfactants based on trisiloxane. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Frampton MB, Yakoub D, Katsaras J, Zelisko PM, Marquardt D. A calorimetric, volumetric and combined SANS and SAXS study of hybrid siloxane phosphocholine bilayers. Chem Phys Lipids 2021; 241:105149. [PMID: 34627769 DOI: 10.1016/j.chemphyslip.2021.105149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 10/20/2022]
Abstract
Siloxanes are molecules used extensively in commercial, industrial, and biomedical applications. The inclusion of short siloxane chains into phospholipids results in interesting physical properties, including the ability to form low polydispersity unilamellar vesicles. As such, hybrid siloxane phosphocholines (SiPCs) have been examined as a potential platform for the delivery of therapeutic agents. Using small angle X-ray and neutron scattering, vibrating tube densitometry, and differential scanning calorimetry, we studied four hybrid SiPCs bilayers. Lipid volume measurements for the different SiPCs compared well with those previously determined for polyunsaturated PCs. Furthermore, the different SiPC's membrane thicknesses increased monotonically with temperature and, for the most part, consistent with the behavior observed in unsaturated lipids such as, 1-palmitoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine and 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine, and the branched lipid 1,2-diphytanoyl-sn-glyerco-3-phosphocholine (DPhyPC).
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Affiliation(s)
- Mark B Frampton
- Department of Chemistry and Centre for Biotechnology, Brock University, St. Catharines, ON, Canada; Advanced Biomanufacturing Centre, Brock University, St. Catharines, ON, Canada; School of Biosciences, Loyalist College, Belleville, ON, Canada
| | - Doruntina Yakoub
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada
| | - John Katsaras
- Labs and Soft Matter Group, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA; The Bredesen Center, University of Tennessee, Knoxville, TN, USA; Shull Wollan Center, Oak Ridge National Laboratory, Oak Ridge, TN, USA; Department of Physics, Brock University, St. Catharines, ON, Canada; Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - Paul M Zelisko
- Department of Chemistry and Centre for Biotechnology, Brock University, St. Catharines, ON, Canada; Advanced Biomanufacturing Centre, Brock University, St. Catharines, ON, Canada
| | - Drew Marquardt
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada; Department of Physics, University of Windsor, Windsor, ON, Canada
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Gómara MJ, Pons R, Herrera C, Ziprin P, Haro I. Peptide Amphiphilic-Based Supramolecular Structures with Anti-HIV-1 Activity. Bioconjug Chem 2021; 32:1999-2013. [PMID: 34254794 PMCID: PMC8447191 DOI: 10.1021/acs.bioconjchem.1c00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
In a previous work,
we defined a novel HIV-1 fusion inhibitor peptide
(E1P47) with a broad spectrum of activity against viruses from different
clades, subtypes, and tropisms. With the aim to enhance its efficacy,
in the present work we address the design and synthesis of several
peptide amphiphiles (PAs) based on the E1P47 peptide sequence to target
the lipid rafts of the cell membrane where the cell–cell fusion
process takes place. We report the synthesis of novel PAs having a
hydrophobic moiety covalently attached to the peptide sequence through
a hydrophilic spacer of polyethylene glycol. Characterization of self-assembly
in condensed phase and aqueous solution as well as their interaction
with model membranes was analyzed by several biophysical methods.
Our results demonstrated that the length of the spacer of polyethylene
glycol, the position of the peptide conjugation as well as the type
of the hydrophobic residue determine the antiviral activity of the
construct. Peptide amphiphiles with one alkyl tail either in C-terminus
(C-PAmonoalkyl) or in N-terminus (N-PAmonoalkyl) showed the highest anti-HIV-1
activities in the cellular model of TZM-bl cells or in a preclinical
model of the human mucosal tissue explants.
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Affiliation(s)
- Maria J Gómara
- Unit of Synthesis and Biomedical Applications of Peptides, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona, 18-26 08034 Barcelona, Spain
| | - Ramon Pons
- Physical Chemistry of Surfactant Systems, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona, 18-26 08034 Barcelona, Spain
| | - Carolina Herrera
- Department of Medicine, Imperial College London, London W2 1PG, United Kingdom
| | - Paul Ziprin
- Department of Surgery and Cancer, St. Mary's Hospital, Imperial College London, London W2 1PG, United Kingdom
| | - Isabel Haro
- Unit of Synthesis and Biomedical Applications of Peptides, Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona, 18-26 08034 Barcelona, Spain
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6
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Frampton MB, Blais A, Raczywolski Z, Castle A, Zelisko PM. Exploring the utility of hybrid siloxane-phosphocholine (SiPC) liposomes as drug delivery vehicles. RSC Adv 2021. [DOI: 10.1039/d0ra10052h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid siloxane-phosphocholines (SiPCs) are a unique class of lipids that spontaneously form unilamellar vesicles (ULVs) that are ∼100 nm in diameter upon exposure to aqueous media without the need for extrusion and can be used as delivery vehicles.
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Affiliation(s)
- Mark B. Frampton
- Department of Chemistry
- Centre for Biotechnology
- Brock University
- St. Catharines
- Canada
| | - Andrea Blais
- Department of Chemistry
- Centre for Biotechnology
- Brock University
- St. Catharines
- Canada
| | - Zachary Raczywolski
- Department of Chemistry
- Centre for Biotechnology
- Brock University
- St. Catharines
- Canada
| | - Alan Castle
- Department of Biological Sciences
- Centre for Biotechnology
- Brock University
- St. Catharines
- Canada
| | - Paul M. Zelisko
- Department of Chemistry
- Centre for Biotechnology
- Brock University
- St. Catharines
- Canada
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Tan J, He Z, Zhou D. Micellization of trisiloxane surfactants appended with phenyl groups and polyether in aqueous solution. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2019.1638269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jinglin Tan
- School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang, China
| | - Ziyan He
- School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang, China
| | - Dezhi Zhou
- School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang, China
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8
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Tan J, He Z, Miao Y, Zhou D. Effect of Steric Hindrance on the Aggregation Behavior of Cationic Silicone Surfactants in Aqueous Solutions. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00888-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Tan J, Xiong X, He Z, Cao F, Sun D. Aggregation Behavior of Polyether Based Siloxane Surfactants in Aqueous Solutions: Effect of Alkyl Groups and Steric Hindrance. J Phys Chem B 2019; 123:1390-1399. [PMID: 30645936 DOI: 10.1021/acs.jpcb.8b10727] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A series of polyether based siloxane surfactants with different branched chain and alkyl groups were synthesized by thiol-ene reaction and Piers-Rubinsztajn reaction. The effect of the siloxane structures (alkyl groups and branched chains) on the adsorption and aggregation behavior in aqueous solution was investigated by surface tension, fluorescence, dynamic light scattering (DLS), freeze-fracture transmission electron microscopy (TEM), and TEM. The molecular structures of siloxane can obviously influence their surface activities and thermodynamics. Replacing the methyl of trimethylsiloxyl groups with longer alkyl groups (ethyl, propyl, and butyl) and branching trimethylsiloxyl resulted in an obvious decrease of the values of critical micelle concentration (CMC) and surface tension at CMC (γCMC). Dense surface films packed with CH3 groups result in the lower surface tensions being disordered by longer alkyl groups or branched chains of siloxane hydrophobic groups. And the minimum surface area per surfactant molecule ( Amin) values of Si3-PG, Et-Si3-PG, Pro-Si3-PG, and But-Si3-PG successively decrease about 3.5 Å with each increasing -CH2- group. All polyether based siloxane surfactants can form nonuniform size spheroidal aggregates in aqueous solution. Concerning the driving force, the micellization process was spontaneous but less spontaneous compared with adsorption.
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Affiliation(s)
- Jinglin Tan
- School of Chemical and Environmental Engineering , Jiujiang University , Jiujiang , Jiangxi 332005 , China
| | - Xiaomei Xiong
- School of Chemical and Environmental Engineering , Jiujiang University , Jiujiang , Jiangxi 332005 , China
| | - Ziyan He
- School of Chemical and Environmental Engineering , Jiujiang University , Jiujiang , Jiangxi 332005 , China
| | - Fei Cao
- School of Chemical and Environmental Engineering , Jiujiang University , Jiujiang , Jiangxi 332005 , China
| | - Desi Sun
- School of Chemical and Environmental Engineering , Jiujiang University , Jiujiang , Jiangxi 332005 , China
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10
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Castelletto V, Barnes RH, Karatzas KA, Edwards-Gayle CJC, Greco F, Hamley IW, Seitsonen J, Ruokolainen J. Restructuring of Lipid Membranes by an Arginine-Capped Peptide Bolaamphiphile. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1302-1311. [PMID: 30056711 DOI: 10.1021/acs.langmuir.8b01014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We study the self-assembly of arginine-capped bolaamphiphile peptide RA3R (A: alanine, R: arginine) together with its binding to model membranes and its cytotoxicity and antimicrobial activity. Anionic 2-oleoyl-1-palmitoyl- sn-glycero-3-phospho-rac-(1-glycerol) sodium salt/2-oleoyl-1-palmitoyl- sn-glycero-3-phosphoethanolamine (POPG/POPE) vesicles and zwitterionic 1,2-dioleoyl- sn-glycero-3-phosphocholine/2-oleoyl-1-palmitoyl- sn-glycero-3-phosphocholine (POPC/DOPC) vesicles are used as model membranes to mimic bacterial and mammalian cell membranes, respectively. We show that RA3R adopts a polyproline-II collagen-like conformation in water. Binding of RA3R to POPG/POPE vesicles induces a strong correlation between the lipid bilayers, driven by RA3R/POPG attractive electrostatic interaction together with a shift of the intramolecular POPE zwitterionic interaction toward an attractive electrostatic interaction with the RA3R. Populations of RA3R/POPG/POPE vesicles comprise different bilayer spacings, dA and dB, controlled by the conformation of the lipid chains corresponding to the Lβ (gel-like) and Lα (liquid-crystal) phases, respectively. Cryo-TEM images reveal the presence of vesicles with no internal structure, compartmentalized thin-wall vesicles, or multilayer vesicles with uncorrelated layers and compartmentalization depending on the RA3R/POPG/POPE composition. In contrast, the interaction of RA3R with multilamellar POPC/DOPC vesicles leads to the decorrelation of the lipid bilayers. RA3R was tolerated by skin fibroblast cells for a concentration up to 0.01 wt %, while 0.25 wt % RA3R proved to be an efficient antibacterial agent against Gram-positive bacteria L. monocytogenes. Our results highlight the ability of RA3R to distinguish between bacterial and mammalian cells and establish this peptide as a candidate to reduce the proliferation of L. monocytogenes bacteria.
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Affiliation(s)
- Valeria Castelletto
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Ruth H Barnes
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Kimon-Andreas Karatzas
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Charlotte J C Edwards-Gayle
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Francesca Greco
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Ian W Hamley
- School of Chemistry, Food Biosciences and Pharmacy , University of Reading , Whiteknights , Reading RG6 6AD , United Kingdom
| | - Jani Seitsonen
- Department of Applied Physics , Aalto School of Science , P.O. Box 15100, FI-00076 Aalto , Finland
| | - Janne Ruokolainen
- Department of Applied Physics , Aalto School of Science , P.O. Box 15100, FI-00076 Aalto , Finland
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Characterization of self-assembled hybrid siloxane-phosphocholine bilayers. Chem Phys Lipids 2018; 216:1-8. [PMID: 30098944 DOI: 10.1016/j.chemphyslip.2018.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/24/2018] [Accepted: 07/31/2018] [Indexed: 01/25/2023]
Abstract
We have synthesized six new hybrid siloxane phosphocholines (SiPCs) and examined their self-assembly behaviour in aqueous dispersions. Employing small angle X-ray scattering we have characterized SiPC bilayers. SiPCs exhibit differential self-assembly behaviour that results from the interplay between the siloxane fatty acid in the sn-2 position and the differing chain length fatty acids in the sn-1 position. SiPCs that possess a fatty acid chain of a C8-C14 chain length in the sn-1 position form unilamellar vesicles. Extending the fatty acid chain length to C16 and C18 allows for the formation of both unilamellar and multilamellar vesicles. We propose that the preferential formation of unilamellar vesicles is the result of an enhanced hydrophobic effect imparted by siloxane chains at the termini of lipid tails.
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